The product is a pair of Accu Trak Tool 30 TPI knurling wheels, with a size of 1 1/4 x 1/2 x 1/2 inches on both the left and right sides. These wheels feature a diamond pattern and are designed for male and female threads. The brand, Accu Trak Tool, specializes in providing precision tools for various industrial applications, making these knurling wheels a reliable and high-quality option for professional use.